linux-kernel - [PATCH 2/2] soc: mediatek: mutex: Add support for MT6795 Helio X10 display mutex

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Date:   Tue, 13 Sep 2022 16:01:21 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     robh+dt@...nel.org
Cc:     krzysztof.kozlowski+dt@...aro.org, matthias.bgg@...il.com,
        angelogioacchino.delregno@...labora.com, chunkuang.hu@...nel.org,
        jason-jh.lin@...iatek.com, rex-bc.chen@...iatek.com,
        moudy.ho@...iatek.com, allen-kh.cheng@...iatek.com,
        p.zabel@...gutronix.de, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: [PATCH 2/2] soc: mediatek: mutex: Add support for MT6795 Helio X10 display mutex

MT6795 has the same mutex mod/sof register layout as MT2712 and MT8173,
but supports only four SOF, as it has two DSI and one DPI.
Support is added by reusing most of the MT8173 data, with the addition
of a mt6795-specific SOF array (and devicetree compatible, of course).

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
 drivers/soc/mediatek/mtk-mutex.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/soc/mediatek/mtk-mutex.c b/drivers/soc/mediatek/mtk-mutex.c
index e82421386335..eb021e347753 100644
--- a/drivers/soc/mediatek/mtk-mutex.c
+++ b/drivers/soc/mediatek/mtk-mutex.c
@@ -433,6 +433,13 @@ static const unsigned int mt2712_mutex_sof[DDP_MUTEX_SOF_MAX] = {
 	[MUTEX_SOF_DSI3] = MUTEX_SOF_DSI3,
 };
 
+static const unsigned int mt6795_mutex_sof[DDP_MUTEX_SOF_MAX] = {
+	[MUTEX_SOF_SINGLE_MODE] = MUTEX_SOF_SINGLE_MODE,
+	[MUTEX_SOF_DSI0] = MUTEX_SOF_DSI0,
+	[MUTEX_SOF_DSI1] = MUTEX_SOF_DSI1,
+	[MUTEX_SOF_DPI0] = MUTEX_SOF_DPI0,
+};
+
 static const unsigned int mt8167_mutex_sof[DDP_MUTEX_SOF_MAX] = {
 	[MUTEX_SOF_SINGLE_MODE] = MUTEX_SOF_SINGLE_MODE,
 	[MUTEX_SOF_DSI0] = MUTEX_SOF_DSI0,
@@ -487,6 +494,13 @@ static const struct mtk_mutex_data mt2712_mutex_driver_data = {
 	.mutex_sof_reg = MT2701_MUTEX0_SOF0,
 };
 
+static const struct mtk_mutex_data mt6795_mutex_driver_data = {
+	.mutex_mod = mt8173_mutex_mod,
+	.mutex_sof = mt6795_mutex_sof,
+	.mutex_mod_reg = MT2701_MUTEX0_MOD0,
+	.mutex_sof_reg = MT2701_MUTEX0_SOF0,
+};
+
 static const struct mtk_mutex_data mt8167_mutex_driver_data = {
 	.mutex_mod = mt8167_mutex_mod,
 	.mutex_sof = mt8167_mutex_sof,
@@ -865,6 +879,8 @@ static const struct of_device_id mutex_driver_dt_match[] = {
 	  .data = &mt2701_mutex_driver_data},
 	{ .compatible = "mediatek,mt2712-disp-mutex",
 	  .data = &mt2712_mutex_driver_data},
+	{ .compatible = "mediatek,mt6795-disp-mutex",
+	  .data = &mt6795_mutex_driver_data},
 	{ .compatible = "mediatek,mt8167-disp-mutex",
 	  .data = &mt8167_mutex_driver_data},
 	{ .compatible = "mediatek,mt8173-disp-mutex",
-- 
2.37.2